/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
/* Generated By:JavaCC: Do not edit this line. TokenMgrError.java Version 3.0 */
package org.apache.pig.pigpen.editor.parser;

public class TokenMgrError extends Error {
    /*
     * Ordinals for various reasons why an Error of this type can be thrown.
     */

    /**
     * Lexical error occurred.
     */
    static final int LEXICAL_ERROR = 0;

    /**
     * An attempt was made to create a second instance of a static token
     * manager.
     */
    static final int STATIC_LEXER_ERROR = 1;

    /**
     * Tried to change to an invalid lexical state.
     */
    static final int INVALID_LEXICAL_STATE = 2;

    /**
     * Detected (and bailed out of) an infinite loop in the token manager.
     */
    static final int LOOP_DETECTED = 3;

    /**
     * Indicates the reason why the exception is thrown. It will have one of the
     * above 4 values.
     */
    int errorCode;

    /**
     * Replaces unprintable characters by their escaped (or unicode escaped)
     * equivalents in the given string
     */
    protected static final String addEscapes(String str) {
        StringBuffer retval = new StringBuffer();
        char ch;
        for (int i = 0; i < str.length(); i++) {
            switch (str.charAt(i)) {
            case 0:
                continue;
            case '\b':
                retval.append("\\b");
                continue;
            case '\t':
                retval.append("\\t");
                continue;
            case '\n':
                retval.append("\\n");
                continue;
            case '\f':
                retval.append("\\f");
                continue;
            case '\r':
                retval.append("\\r");
                continue;
            case '\"':
                retval.append("\\\"");
                continue;
            case '\'':
                retval.append("\\\'");
                continue;
            case '\\':
                retval.append("\\\\");
                continue;
            default:
                if ((ch = str.charAt(i)) < 0x20 || ch > 0x7e) {
                    String s = "0000" + Integer.toString(ch, 16);
                    retval.append("\\u"
                            + s.substring(s.length() - 4, s.length()));
                } else {
                    retval.append(ch);
                }
                continue;
            }
        }
        return retval.toString();
    }

    /**
     * Returns a detailed message for the Error when it is thrown by the token
     * manager to indicate a lexical error. Parameters : EOFSeen : indicates if
     * EOF caused the lexical error curLexState : lexical state in which this
     * error occurred errorLine : line number when the error occurred
     * errorColumn : column number when the error occurred errorAfter : prefix
     * that was seen before this error occurred curchar : the offending
     * character Note: You can customize the lexical error message by modifying
     * this method.
     */
    protected static String LexicalError(boolean EOFSeen, int lexState,
            int errorLine, int errorColumn, String errorAfter, char curChar) {
        return ("Lexical error at line "
                + errorLine
                + ", column "
                + errorColumn
                + ".  Encountered: "
                + (EOFSeen ? "<EOF> " : ("\""
                        + addEscapes(String.valueOf(curChar)) + "\"")
                        + " (" + (int) curChar + "), ") + "after : \""
                + addEscapes(errorAfter) + "\"");
    }

    /**
     * You can also modify the body of this method to customize your error
     * messages. For example, cases like LOOP_DETECTED and INVALID_LEXICAL_STATE
     * are not of end-users concern, so you can return something like :
     * 
     * "Internal Error : Please file a bug report .... "
     * 
     * from this method for such cases in the release version of your parser.
     */
    public String getMessage() {
        return super.getMessage();
    }

    /*
     * Constructors of various flavors follow.
     */

    public TokenMgrError() {
    }

    public TokenMgrError(String message, int reason) {
        super(message);
        errorCode = reason;
    }

    public TokenMgrError(boolean EOFSeen, int lexState, int errorLine,
            int errorColumn, String errorAfter, char curChar, int reason) {
        this(LexicalError(EOFSeen, lexState, errorLine, errorColumn,
                errorAfter, curChar), reason);
    }
}
